ELEVEN people, including a young mother of an eight-month-old baby and a 17-year-old youth, were appearing in court today over the alleged airliner bomb plot.

They were due at City of Westminster Magistrates Court.

Scotland Yard has until tomorrow to question 11 other suspects, including one, Tayib Rauf, arrested in Birmingham.

Charges against the 17-year-old male, who cannot be named for legal reasons, alleged he had a book on bombs, suicide notes and the wills of people prepared to commit acts of terror.

The mother, 23-year-old Cossar Ali, from Walthamstow, east London, is charged with failing to disclose information which may have helped prevent her husband allegedly committing terrorism.

He was one of eight charged with conspiracy to murder and a new offence of preparing acts of terrorism, which came into force earlier this year.

For the first time, head of the Metropolitan Police anti-terrorist branch Peter Clarke yesterday revealed details of the "immense" investigation and warned the terror threat was still "deadly and enduring".

He said police had seized bomb-making equipment since the arrests on August 10 including chemicals, electrical components and documents.

There was "highly significant" video and audio surveillance of the alleged plotters, he said.